Create a set of random numbers between -10.0 to +10.0 by using the ‘rand’ function.

create random number -10.0 to +10.0

Answer 1

[Bhanu Prakash]

Hi Mathi,

As per my understanding, you want to create a set of random numbers between -10.0 to +10.0 by using "rand" function.

Consider the code below:

r = a + (b-a).*rand(N,1)

It creates "N" random numbers in the interval (a,b). In your case, the values of "a" & "b" are -10 & 10 respectively. For N = 10, the code gives the following output:

a = -10.0;
b = +10.0;
N = 10;
r = a + (b-a).*rand(N,1)

r =

   -6.8477
    9.4119
    9.1433
   -0.2925
    6.0056
   -7.1623
   -1.5648
    8.3147
    5.8441
    9.1898

The output "r" is a 10x1 matrix, containing the random numbers in the interval (-10,+10).

For more information on "rand" function, you can refer to the following documentation:

https://www.mathworks.com/help/releases/R2023a/matlab/ref/rand.html?s_tid=doc_srchtitle